about and perhaps that's because it is something we can do about, and the things we are doing to the environment are making these things more unbearable. for example, construction. soon after the earthquake in haiti was an earthquake in chile that was slightly on a level higher that killed less than 100 people, fewer than 100 people. we are a city of buildings and all these things and people have been forced to leave the countryside to come to the city to work and you have this dense population. we often discuss these things and how you version, the land, the fact we have to bring the trees for charcoal causes us to have these massive amount play and flooding. so these things are things we can do something about is a community. they get repeated more, that these other theories also talked about. >> host: and reading through "so spoke the earth," i was struck by the fact that so many writers here and in a sense to return. >> guest: i think so many of us come his children. it's different when you don't choose your migrations. we were like i've parents who fell like they had no choice but to leave.